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Bently Nevada 128608-02
Bently Nevada 128608-02
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1/2-in NPT conduit adapter

128608-02

Spare Part Number

PN128608-02

Product Information:

Part number 128608-02 represents the Bently Nevada 1/2-inch NPT conduit adapter. This industrial hardware accessory is used to directly connect flexible or rigid conduits to vibration sensor housings. It protects the connection cable from harsh environments, mechanical stress, and moisture.

Product image is representative; revision or series may vary. Contact us to request a specific version.
  • One-year warranty
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Technical specifications for

128608-02

0 TECHNICAL PARAMETERS
  • Manufacturer:
    Bently Nevada
  • Product Category:
    Sensor
  • Spare Part Number:
    128608-02
  • Estimated shipping dimensions:
    5.8 x 8.3 x 12.5 cm
  • Weight:
    0.28 kg
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
  • Product Type:
    1/2-in NPT conduit adapter
  • Category Series:
    190501 Velomitor CT Transducer
  • Sensitivity:
    3.94 mV/mm/s (100 mV/in/s) ±5%.
  • Temperature Sensitivity:
    -8% to +5% typical over the operating temperature range
  • Transverse Response:
    Less than 5% of the axial sensitivity
  • Amplitude Linearity:
    ±2% to 63.5 mm/s pk (2.5 in/s pk)
  • Output Bias Voltage:
    10.1 Vdc ± 1.0 Vdc, Pin A referenced to Pin B
  • Dynamic Output Impedance:
    <400 Ω typical
  • Operating Temperature:
    -40°C to +85°C (-40°F to +185°F)
  • Storage Temperature:
    -40°C to +100°C (-40°F to +212°F)
  • Shock Limit:
    5000 g pk, maximum
  • Humidity Limit:
    100% condensing, non-submerged
  • Series:
    Bently Nevada
  • Stock:
    50
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Alternative Names

12860802 128608 02 I28608-02 1286O8-O2 04284020-01 107756-01 107754-01 125094-01 128038-01 128689-01 128690-01 190501-09-99-00 190501-12-00-01 190501-02-99-00

Information

Overview Manuals Physical info Primary Application

Features:

  • 190501 Velomitor CT Transducer
  • 1/2-in NPT conduit adapter
  • Parameters are specified from +20°C to +30°C (+68°F to +86°F) and 100 Hz unless otherwise indicated
The Velomitor CT Velocity Transducer is a low-frequency version of our standard Velomitor Piezo-velocity Sensor. Its design specifically measures casing vibration velocity on cooling tower and air-cooled heat-exchanger fan assemblies that operate at or above 90 rpm (100 to 300 rpm typical).

The Velomitor CT Transducer can measure vibration amplitudes at these frequencies as well as the vibration frequencies generated by the fan motor and speed reducer.

The 128608-02 Bently Nevada 1/2-in NPT conduit adapter may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 128608-02 1/2-in NPT conduit adapter Manuals(Datasheets), Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Mounting Surface: 33 mm diameter (1.3 in diameter). 
Height: 82 mm (3.2 in).
Case Material: 316L stainless steel
Connector: 2-pin 316L stainless steel MIL-C-5015, top.
Mounting Torque: 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf).
Polarity: Pin A goes positive with respect to Pin B when velocity is from base to top of the transducer.
Mounting Angle: Any orientation.
Recommended Cable Length: 219 m (720 ft ) Assuming max vibration of 4 in/s, frequency 1 kHz, and cable capacitance 200 pf/m. For longer lengths, contact Bently Nevada Tech Support.
According to the official datasheet for the Bently Nevada 190501 Velomitor CT, this adapter is the standard mounting hardware for the 190501 Velomitor CT (cooling tower) velocity sensor. The Velomitor CT is used to measure low-frequency casing vibrations in low-speed operating equipment such as induced draft cooling towers and air-cooled heat exchangers.

Technical notes

The 128608-02 is a 300 Series stainless steel 1/2-inch NPT conduit adapter manufactured by Bentley Nevada. It is designed for the 190501 Velomitor CT low-frequency velocity sensor, used to connect a flexible, liquid-tight metal conduit to the top of the sensor. This component primarily protects the internal signal cable from mechanical abrasion and chemical corrosion in harsh environments and is used in vibration monitoring systems for cooling towers and air-cooled heat exchanger fan assemblies.
PRODUCT & ORDER FAQS

Questions buyers ask about 128608-02

  • How does the 128608-02 optimize high-integrity signal transmission in advanced machinery condition monitoring architectures?

    The 128608-02 is designed to support reliable signal communication and measurement consistency in critical industrial monitoring environments.
  • Why is the 128608-02 considered a key component of high-availability rotating equipment protection systems?

    The 128608-02 helps maintain reliable monitoring performance, helping operators detect abnormal machine behavior before failure occurs.
  • How does the 128608-02 maintain signal fidelity in environments with long installation distances and complex industrial cabling?

    The 128608-02 is designed to minimize signal attenuation and maintain measurement integrity throughout the monitoring chain.
  • Why is the configuration architecture of 128608-02 critical for achieving calibration consistency and measurement repeatability?

    128608-02 helps ensure that the monitoring system maintains reliable and repeatable performance over long-term operation.
  • What commissioning parameters should engineers verify before deploying 128608-02?

    When commissioning 128608-02, engineers should verify system compatibility, wiring integrity, calibration settings, and environmental operating conditions.
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Moore Disclaimer: Moore Automated's sales automation equipment and related solutions are intended for industrial automation and business operational efficiency improvement purposes only. Product information, technical parameters, and application cases are for reference only and do not constitute an absolute guarantee of performance for any specific industry, scenario, or final application. Actual equipment performance may vary depending on factors such as the usage environment, system integration method, and maintenance conditions. Users should confirm compatibility and safety based on professional technical assessments. Moore Automated assumes no liability for any direct or indirect losses caused by improper use, modification, or failure to operate according to specifications, to the extent permitted by law.

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